1 files changed, 44 insertions, 0 deletions
diff --git a/lua/nvim-lsp-installer/jobs/outdated-servers/npm.lua b/lua/nvim-lsp-installer/jobs/outdated-servers/npm.lua
new file mode 100644
index 00000000..ca42edbd
--- /dev/null
+++ b/lua/nvim-lsp-installer/jobs/outdated-servers/npm.lua
@@ -0,0 +1,44 @@
+local process = require "nvim-lsp-installer.process"
+local log = require "nvim-lsp-installer.log"
+local VersionCheckResult = require "nvim-lsp-installer.jobs.outdated-servers.version-check-result"
+
+---@param server Server
+---@param source InstallReceiptSource
+---@param on_check_complete fun(result: VersionCheckResult)
+return function(server, source, on_check_complete)
+    local stdio = process.in_memory_sink()
+    process.spawn(
+        "npm",
+        {
+            args = vim.list_extend({ "outdated", "--json" }, { source.package }),
+            cwd = server.root_dir,
+            stdio_sink = stdio.sink,
+        },
+        -- Note that `npm outdated` exits with code 1 if it finds outdated packages
+        vim.schedule_wrap(function()
+            ---@alias NpmOutdatedPackage {current: string, wanted: string, latest: string, dependent: string, location: string}
+            ---@type table<string, NpmOutdatedPackage>
+            local ok, data = pcall(vim.json.decode, table.concat(stdio.buffers.stdout, ""))
+
+            if not ok then
+                log.fmt_error("Failed to parse npm outdated --json output. %s", data)
+                return on_check_complete(VersionCheckResult.fail(server))
+            end
+
+            ---@type OutdatedPackage[]
+            local outdated_packages = {}
+
+            for package, outdated_package in pairs(data) do
+                if outdated_package.current ~= outdated_package.latest then
+                    table.insert(outdated_packages, {
+                        name = package,
+                        current_version = outdated_package.current,
+                        latest_version = outdated_package.latest,
+                    })
+                end
+            end
+
+            on_check_complete(VersionCheckResult.success(server, outdated_packages))
+        end)
+    )
+end